12512489 has 6 divisors (see below), whose sum is σ = 13753530. Its totient is φ = 11374880.

The previous prime is 12512447. The next prime is 12512501. The reversal of 12512489 is 98421521.

It can be written as a sum of positive squares in only one way, i.e., 10530025 + 1982464 = 3245^2 + 1408^2 .

It is not a de Polignac number, because 12512489 - 2⁸ = 12512233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51584 + ... + 51825.

It is an arithmetic number, because the mean of its divisors is an integer number (2292255).

Almost surely, 2^12512489 is an apocalyptic number.

It is an amenable number.

12512489 is a deficient number, since it is larger than the sum of its proper divisors (1241041).

12512489 is a wasteful number, since it uses less digits than its factorization.

12512489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103431 (or 103420 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 12512489 is about 3537.2996763068. The cubic root of 12512489 is about 232.1567076909.

The spelling of 12512489 in words is "twelve million, five hundred twelve thousand, four hundred eighty-nine".